I have to agree with our devs, piggies/chickens/butterflies inside towers seems sad, therefore(!)
I propose we get a barn ~with functional doors which we can open and shut at will, so we can
choose to leave our animals inside the barn, or let them roam outside, in the sunshine! =)
The reason animals get sad in towers is because they are semi-public/semi-private spaces … and history has shown that any place which can have animals in Glitch soon will be coated with a uniform spread of piggies, butterflies and chickens.
Not everyone likes there to be animals in covering every available space (sometimes because it get a bit boring to see the same thing everywhere, sometimes because they interfere with other actions and sometimes for performance reasons).
So, once we build a way for the owner to decide whether or not to allow animals, we can start allowing animals (though it would be off by default). That way, people who don't want animals inside their towers won't have to come back to towers filled with animals … and people who do want 'em can have 'em.
Separate from this one issue, it is exciting to imagine future iterations of towers where each floor can be entirely it's own environment — so, an outdoor floor (complete with cultivation) sandwiched between a trophy room and a building materials store.